Explain how many femtometers are in a nanometer?

979

---

Explain what is free fall acceleration?

1027

---

Explain what is relation between magnetic and electricity and why?

940

---

Explain what is optical medium?

939

---

Explain the working of basic rubber ink filler

951

---

Explain what is the rectilinear propagation of light?

994

---

Explain what is photometry?

933

---

Tell me when taken to the top of a mountain, a clock will go fast or go slow or no change or stop?

915

---

Explain what is h1n1?

973

---

Explain what is the shadows?

956

---

Explain what is the heterogenous?

921

---

Tell me how we are getting light from electrical bulb?

886

---

Draw a graph between frequency of photon and velocity of photo electron?

896

---

What are the ten satellite launched from india and year of launch?

990

---

explain the proper definition of light?

994

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